Preheat Your Oven:

Preheat the oven to 350°F (175°C). Grease and lightly flour a 9x13-inch baking dish.

Mix Wet Ingredients:

In a large mixing bowl, beat together granulated sugar, brown sugar, and vegetable oil until well combined. Add eggs one at a time, beating well after each addition. Stir in the vanilla extract.

Combine Dry Ingredients:

In a separate bowl, whisk together the flour, baking powder, and salt.

Make the Batter:

Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Fold in the chopped pecans with a rubber spatula.

Pour and Spread:

Pour the batter into the prepared baking dish and spread it evenly using a spatula.

Bake:

Bake for 35–40 minutes, or until a toothpick inserted into the center comes out clean.

Cool and Serve:

Let the pecanbread cool in the pan on a wire rack for 15 minutes before slicing into squares. Serve warm or at room temperature.